Roll-turning lathe.



No. 734,997. PATENTED JULY 28, 1903.. J. THOMAS.

ROLL TURNING LATHE.

APPLIUATION FILED NOV. 10, 1902.

N0 MODEL.

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JOHN THOMAS, or srf'toors, MISSOURI.

ROLL-TURNING LATHE.

SPECIFICATION forming part of Letters Patent No. 734,997, dated July 28,1903. Application fil d November 10, 1902. Serial to. 130,671. (Nomodel},

T0 aZZ whom it may concern:

Be it known that I, JOHN THOMAS, a citizen of the United States,residing in the city of St. Louis, in the State of Missouri, haveinvented certain new and useful Improvements in Roll-Turning Lathes, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, forming part of thisspecification. 7

My invention relates to a lathe for use in turning, dressing, orfinishing mill-rolls; and it consists in features of novelty hereinafterfully described, and pointed out in the claims.

Figure I is an end elevation of my lathe with rolls shown mountedtherein to be turned. Fig. II is a side elevation partly broken out.Fig. III is a vertical transverse section taken on line III III, Fig.II. Fig. IV is a top view of one end of the lathe, showing one of thetop riders swung outwardly. Fig. V is a horizontal section through oneof the end frames of the lathe with one of the lower riders shown swungoutwardly. Fig. VI is a perspective View of one of the tool-sockets.

1 designates the end frames of the lathe, which are connected bytie-rods 2. Each end frameis of U shape and is adapted to receive thejournals of lower and upper rolls A and B to be operated upon. The rollsare designed to be rotated when mounted in the end frames by gears O andD, applied thereto, and a driven gear E, to which power is applied inany suitable manner.

3 are bearing-blocks, one of which is located beneath the journal of thelower roll A, at each end thereof, as illustrated in Fig. I.

4 designates lower riders adapted to rest on the top surfaces of thejournals of the lower roll, to which they are held by bolts 5, whichpass therethrough and are seated in sockets (3, contained by the endframes 1. Each of the riders at is swingingly held by one of said boltsat one of its ends and at the opposite end is provided with a notch a l,that is adapted to be fitted to the corresponding bolt 5.

7 designates rear bearing-blocks seated in sockets in the endframes atthe back of the journals of the lower roll and adapted to receive thecontact of said journals. (See Fig.1.)

8 designates adjustable forward bearingblocks movably positioned inseats 9 in front of'thelower-roll journals. (See Fig. I.) Theseadjustable bearing-blocks are adapted to be pressed inwardly to bearagainst-the front faces of the lower-roll journals, to which they areheld by adjustment-screws 10, which pass through the forward members ofthe end frames 1, as seen in Figs. I and III.

11 designates top riders, which are provided with central bearings 12,adapted to rest uponthe upper surfaces of the journals of the upper roll13, as seen in Fig. I.

13 designates bolts that pass upwardly through the end frames 1, fromthe bottoms thereof, and project through the upper ends of said endframes to receive the riders 11, which are held thereby. Each of theriders 11 is provided with a notch 11, that is adapted to be fitted tothe corresponding vertical bolt 13, while the opposite end of each rideris swingingly held by its corresponding bolt 13. This arrangementprovides for the swinging of the riders outwardly, as seen in FigIV, topermit the introduction of the rolls in like manner to that in which thelower riders 4 are swung for the same purpose.

14 designates end thrust bearing blocks which are seated in the endframes 1, at the inner sides thereof, and arrangedto oppose the ends ofthe bodies of the upper roll B, as seen in Figs. 1, III, and IV, tobring one of said bearing-blocks 14 at each end of the upper roll. I

15 designates adjustment-screws that pass through the end frames 1 andare adapted to bear against the bearing-blocks 14 and by which saidblocks are pressed against the ends of the body of the upper roll toadjust the roll accurately in alinement longitudinally of the lathe andhold it in such condition while it is being operated upon.

16 designates lugs formed upon the inside faces of the end frames 1 andin proximity to the lower roll when said roll is mounted in the lathe,as seen in Fig. III.

17 is a tool-rest mounted on the 1u'g16, and 18 is a tool-brace slidablyseated inthetoolrest 17 and adapted to support a short tool, such asshown in Fig. III, by a set-screw 19, so as to be set to the face of thelower roll AZ 20 designates brackets projecting from the end frames 1,and 21 is a crossbar mounted in said brackets.

" in the tool-rest 17.

22 designates adj ustment-screws which pass loosely through thecross-bar 21 and engaging These adjustment-screws are adapted to bemanipulated to move the tool-rest 17 toward or away from the roll A toadjust the tool-carrying socket 18 with respect to the roll.

23 is a tool-rest provided with legs 24, that are joined by aconnecting-bar 25. The legs 24 are seated on lugs 26, projecting fromthe insides of the end frames 1.

27 is a tool-brace slidably seated in the toolrest 23 and provided witha set-screw 28. The brace 27 is adapted to hold a short tool, such asshown in Fig. III, which is arranged to be held to the face of the upperroll B;

29 designates lugs projecting from the end frames lin proximity to thetool-rest 23, and 30 is a cross-bar seated in said lugs in front of saidtool-rest.

31 designates adjustment-screws that pass loosely through the cross-bar30 and are engaged in the tool-rest 23 to provide for the adjustment ofsaid tool-rest to and from the roll B to hold the tool carried by thebrace 27 to said roll.

In the practical use of my lathe the rolls to be turned or dressed areintroduced into the end frames 1, the riders I and 11 being swungoutwardly, as shown in Figs. IV and V, for theirintroduction. The ridersare then swung inwardly and held to the journals of the rolls bytightening the nuts on the bolts 5 and 13. The adjustment -screws 10 and15 are then turned to carry the bearing-blocks b and 14 inwardly to setrespectively against the forward surfaces of the journals of the lowerroll and the end faces of the upper roll. The gearing D, O, and E beingapplied to the journals of the rolls, power is applied to said gearingto impart rotation to the rolls. The tool-rests 17 and 23 having beenplaced in position and the' tools introduced into the braces 18 and 27,the tool-rests are moved inwardly by the adjustment of the screws 22 and31 to present the tools to the surfaces of the rolls. Rotation is thenimparted to the rolls through the gearing applied thereto, and they areturned and dressed by the tools in the braces, the sockets beingmanually moved longitudinally of the tool-rests as the work progresses.

I claim as my invention 1. In a roll-turning lathe, the combination of apair of U-shaped end frames adapted to receive the rolls adapted to beoperated upon, tool-rests arranged in positions adjacent to said rollswhen mounted in said frames and adjustable bearing-blocks arranged tobear against the side faces of the journals of the lower roll,substantially as described.

of the journals of the lower roll, and adjustment-screws arranged tobear against said bearing-blocks, substantially as described.

3. In a roll-turning lathe, the combination of a pair of U-shaped endframes to receive the rolls to be operated upon, tool-rests arranged inpositions adjacent to said rolls when mounted in said frames, adjustablebearingblocks arranged to bear against the side faces of the journals ofthe lower roll, adjustmentscrews arranged to bear against saidbearingblocks, and adjustable end-thrust bearingblocks arranged to bearagainst the end faces of the upper roll, substantially as described.

4. In a roll-turning lathe, the combination of a pair of U-shaped endframes to receive the rolls to be operated upon, tool-rests ar-' rangedin positions adjacent to said rolls when mounted in said frames,adjustable bearingblocks arranged to bear against the side faces of thejournals of the lower roll adjustmentscrews arranged to bear againstsaid adjustable bearing blocks, end thrust bearingblocks arranged tobear against the end faces of the upper roll, and adjustment-screwsarranged to bear against said end-thrust bearing-blocks, substantiallyas described.

5. In a roll-turning lathe, the combination of a pair of U shaped endframes open at their upper ends to receive the rolls to be operatedupon, horizontally-swingin g riders pivoted to said end frames, andadapted to bear upon the journals of said vertical rolls, boltsextending through the frame, by which the riders are clamped to theroll-journals, and tool-rests arranged adjacent to the rolls whenmounted in said end frames, substantially as described.

6. In a roll-turning lathe, the combination of a pair of U -shaped endframes open at their upper ends to receive the journals of a pair ofrolls to be operated upon, a pair of horizontally-swinging riderssupported by said end frames, vertical bolts extending through theframe, by which said riders are clamped onto the journals of the lowerroll, a pair of horizontally-swinging riders surmounting said end frame,and vertical bolts extending through the frame by which the riders areclamped to the journals of the upper roll, substantially as described.

JOHN THOMAS.

In presence of E. S. KNIGHT, M. P. SMITH.

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